/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:02:14,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:02:14,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:02:14,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:02:14,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:02:14,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:02:14,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:02:14,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:02:14,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:02:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:02:14,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:02:14,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:02:14,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:02:14,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:02:14,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:02:14,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:02:14,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:02:14,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:02:14,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:02:14,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:02:14,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:02:14,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:02:14,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:02:14,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:02:14,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:02:14,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:02:14,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:02:14,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:02:14,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:02:14,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:02:14,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:02:14,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:02:14,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:02:14,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:02:14,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:02:14,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:02:14,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:02:14,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:02:14,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:02:14,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:02:14,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:02:14,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:02:14,232 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:02:14,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:02:14,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:02:14,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:02:14,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:02:14,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:02:14,233 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:02:14,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:02:14,234 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:02:14,234 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:02:14,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:02:14,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:02:14,236 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:02:14,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:02:14,237 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:02:14,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:02:14,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:02:14,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:02:14,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:02:14,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:02:14,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:02:14,246 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:02:14,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:02:14,246 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:02:14,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:02:14,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:02:14,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:02:14,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:14,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:02:14,247 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:02:14,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:02:14,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:02:14,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:02:14,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:02:14,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:02:14,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:02:14,461 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:02:14,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product15.cil.c [2023-04-03 01:02:15,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:02:15,898 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:02:15,898 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product15.cil.c [2023-04-03 01:02:15,908 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93738b3d/9f11d491960a458eae88a02e5e4d5959/FLAGb757ff576 [2023-04-03 01:02:15,921 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93738b3d/9f11d491960a458eae88a02e5e4d5959 [2023-04-03 01:02:15,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:02:15,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:02:15,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:15,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:02:15,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:02:15,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:15" (1/1) ... [2023-04-03 01:02:15,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3627db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:15, skipping insertion in model container [2023-04-03 01:02:15,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:15" (1/1) ... [2023-04-03 01:02:15,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:02:15,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:02:16,157 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product15.cil.c[17176,17189] [2023-04-03 01:02:16,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:16,172 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:02:16,219 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product15.cil.c[17176,17189] [2023-04-03 01:02:16,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:16,236 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:02:16,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16 WrapperNode [2023-04-03 01:02:16,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:16,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:02:16,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:02:16,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:02:16,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:02:16,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:02:16,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:02:16,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:02:16,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (1/1) ... [2023-04-03 01:02:16,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:16,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:02:16,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 01:02:16,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 01:02:16,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:02:16,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:02:16,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:16,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:02:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:02:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:02:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:02:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:02:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:02:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:02:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:02:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:02:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:02:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:02:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2023-04-03 01:02:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:02:16,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:02:16,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:02:16,403 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:02:16,404 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:02:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:02:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:02:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:02:16,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:02:16,573 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:02:16,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:02:17,145 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:02:17,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:02:17,280 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:02:17,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:17 BoogieIcfgContainer [2023-04-03 01:02:17,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:02:17,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:02:17,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:02:17,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:02:17,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:02:15" (1/3) ... [2023-04-03 01:02:17,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d758bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:17, skipping insertion in model container [2023-04-03 01:02:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:16" (2/3) ... [2023-04-03 01:02:17,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d758bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:17, skipping insertion in model container [2023-04-03 01:02:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:17" (3/3) ... [2023-04-03 01:02:17,292 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product15.cil.c [2023-04-03 01:02:17,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:02:17,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:02:17,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:02:17,392 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@504c5f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:02:17,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:02:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 64 states have (on average 1.296875) internal successors, (83), 77 states have internal predecessors, (83), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-04-03 01:02:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 01:02:17,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:17,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:17,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:17,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -374547182, now seen corresponding path program 1 times [2023-04-03 01:02:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:17,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171931115] [2023-04-03 01:02:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:17,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171931115] [2023-04-03 01:02:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171931115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:02:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587405632] [2023-04-03 01:02:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:02:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:02:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:02:17,707 INFO L87 Difference]: Start difference. First operand has 138 states, 64 states have (on average 1.296875) internal successors, (83), 77 states have internal predecessors, (83), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:17,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:17,773 INFO L93 Difference]: Finished difference Result 195 states and 242 transitions. [2023-04-03 01:02:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:02:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-03 01:02:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:17,784 INFO L225 Difference]: With dead ends: 195 [2023-04-03 01:02:17,784 INFO L226 Difference]: Without dead ends: 98 [2023-04-03 01:02:17,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:02:17,793 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:17,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:02:17,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-04-03 01:02:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-04-03 01:02:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 60 states have internal predecessors, (64), 28 states have call successors, (28), 23 states have call predecessors, (28), 18 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-03 01:02:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2023-04-03 01:02:17,840 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 47 [2023-04-03 01:02:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:17,840 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2023-04-03 01:02:17,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2023-04-03 01:02:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-03 01:02:17,853 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:17,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:02:17,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:17,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash -620989294, now seen corresponding path program 1 times [2023-04-03 01:02:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245831569] [2023-04-03 01:02:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:17,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:18,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245831569] [2023-04-03 01:02:18,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245831569] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:18,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:18,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:02:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439160455] [2023-04-03 01:02:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:02:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:02:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:02:18,006 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:18,057 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2023-04-03 01:02:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:02:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-04-03 01:02:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:18,063 INFO L225 Difference]: With dead ends: 146 [2023-04-03 01:02:18,063 INFO L226 Difference]: Without dead ends: 90 [2023-04-03 01:02:18,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:02:18,064 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:18,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 168 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:02:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-04-03 01:02:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-04-03 01:02:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 55 states have internal predecessors, (58), 25 states have call successors, (25), 22 states have call predecessors, (25), 18 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-03 01:02:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2023-04-03 01:02:18,074 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 48 [2023-04-03 01:02:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:18,075 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2023-04-03 01:02:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2023-04-03 01:02:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:02:18,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:18,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:02:18,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:18,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2128983685, now seen corresponding path program 1 times [2023-04-03 01:02:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471664456] [2023-04-03 01:02:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:18,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471664456] [2023-04-03 01:02:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471664456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:02:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008413781] [2023-04-03 01:02:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:02:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:02:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:02:18,266 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:02:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:18,499 INFO L93 Difference]: Finished difference Result 275 states and 331 transitions. [2023-04-03 01:02:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:02:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-03 01:02:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:18,507 INFO L225 Difference]: With dead ends: 275 [2023-04-03 01:02:18,507 INFO L226 Difference]: Without dead ends: 207 [2023-04-03 01:02:18,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:02:18,517 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 161 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:18,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 493 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:02:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-04-03 01:02:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2023-04-03 01:02:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 126 states have internal predecessors, (140), 51 states have call successors, (51), 45 states have call predecessors, (51), 39 states have return successors, (48), 39 states have call predecessors, (48), 47 states have call successors, (48) [2023-04-03 01:02:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 239 transitions. [2023-04-03 01:02:18,563 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 239 transitions. Word has length 51 [2023-04-03 01:02:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:18,564 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 239 transitions. [2023-04-03 01:02:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:02:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 239 transitions. [2023-04-03 01:02:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-03 01:02:18,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:18,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:02:18,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:18,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1337690739, now seen corresponding path program 1 times [2023-04-03 01:02:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:18,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300484093] [2023-04-03 01:02:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:18,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300484093] [2023-04-03 01:02:18,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300484093] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:18,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:18,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:02:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433374616] [2023-04-03 01:02:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:18,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:02:18,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:18,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:02:18,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:02:18,739 INFO L87 Difference]: Start difference. First operand 199 states and 239 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:02:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:18,869 INFO L93 Difference]: Finished difference Result 535 states and 670 transitions. [2023-04-03 01:02:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:02:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-04-03 01:02:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:18,873 INFO L225 Difference]: With dead ends: 535 [2023-04-03 01:02:18,873 INFO L226 Difference]: Without dead ends: 358 [2023-04-03 01:02:18,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:02:18,875 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 61 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:18,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 395 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:02:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-04-03 01:02:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 340. [2023-04-03 01:02:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 191 states have (on average 1.3036649214659686) internal successors, (249), 220 states have internal predecessors, (249), 84 states have call successors, (84), 72 states have call predecessors, (84), 64 states have return successors, (86), 64 states have call predecessors, (86), 80 states have call successors, (86) [2023-04-03 01:02:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2023-04-03 01:02:18,921 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 419 transitions. Word has length 56 [2023-04-03 01:02:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:18,922 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 419 transitions. [2023-04-03 01:02:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:02:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 419 transitions. [2023-04-03 01:02:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 01:02:18,924 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:18,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:02:18,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:18,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 598914640, now seen corresponding path program 1 times [2023-04-03 01:02:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890399039] [2023-04-03 01:02:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:18,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 01:02:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:18,979 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 01:02:18,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 01:02:18,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:02:18,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:02:18,984 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-03 01:02:18,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:02:19,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:02:19 BoogieIcfgContainer [2023-04-03 01:02:19,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:02:19,024 INFO L158 Benchmark]: Toolchain (without parser) took 3099.75ms. Allocated memory is still 263.2MB. Free memory was 215.4MB in the beginning and 191.6MB in the end (delta: 23.7MB). Peak memory consumption was 24.3MB. Max. memory is 8.0GB. [2023-04-03 01:02:19,025 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:02:19,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.93ms. Allocated memory is still 263.2MB. Free memory was 214.9MB in the beginning and 197.1MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-03 01:02:19,025 INFO L158 Benchmark]: Boogie Preprocessor took 92.81ms. Allocated memory is still 263.2MB. Free memory was 197.1MB in the beginning and 193.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-03 01:02:19,026 INFO L158 Benchmark]: RCFGBuilder took 952.38ms. Allocated memory is still 263.2MB. Free memory was 193.4MB in the beginning and 136.8MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-04-03 01:02:19,026 INFO L158 Benchmark]: TraceAbstraction took 1737.19ms. Allocated memory is still 263.2MB. Free memory was 136.3MB in the beginning and 191.6MB in the end (delta: -55.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:02:19,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 310.93ms. Allocated memory is still 263.2MB. Free memory was 214.9MB in the beginning and 197.1MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 92.81ms. Allocated memory is still 263.2MB. Free memory was 197.1MB in the beginning and 193.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 952.38ms. Allocated memory is still 263.2MB. Free memory was 193.4MB in the beginning and 136.8MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1737.19ms. Allocated memory is still 263.2MB. Free memory was 136.3MB in the beginning and 191.6MB in the end (delta: -55.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 880]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L59] int pumpRunning = 0; [L60] int systemActive = 1; [L464] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L662] int waterLevel = 1; [L663] int methaneLevelCritical = 0; [L742] int cleanupTimeShifts = 4; [L818] int retValue_acc ; [L819] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L823] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L825] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L911] int retValue_acc ; [L914] retValue_acc = 1 [L915] return (retValue_acc); [L825] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L825] tmp = valid_product() [L827] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L829] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L830] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L809] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L229] int splverifierCounter ; [L230] int tmp ; [L231] int tmp___0 ; [L232] int tmp___1 ; [L233] int tmp___2 ; [L236] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L238] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L240] COND TRUE splverifierCounter < 4 [L246] tmp = __VERIFIER_nondet_int() [L248] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L250] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L680] COND TRUE waterLevel < 2 [L681] waterLevel = waterLevel + 1 [L250] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L256] tmp___0 = __VERIFIER_nondet_int() [L258] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L266] tmp___2 = __VERIFIER_nondet_int() [L268] COND FALSE !(\read(tmp___2)) [L272] tmp___1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L276] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L213] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L220] systemActive = 0 [L276] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L283] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L67] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L74] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L82] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L843] int tmp ; [L844] int tmp___0 ; [L845] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L849] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L701] int retValue_acc ; [L704] retValue_acc = methaneLevelCritical [L705] return (retValue_acc); [L849] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L849] tmp = isMethaneLevelCritical() [L851] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L855] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L733] int retValue_acc ; [L736] retValue_acc = waterLevel [L737] return (retValue_acc); [L855] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L855] tmp___0 = getWaterLevel() [L857] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L859] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] int retValue_acc ; [L168] retValue_acc = pumpRunning [L169] return (retValue_acc); [L859] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L859] tmp___1 = isPumpRunning() [L861] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L865] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L880] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 179 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 1168 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 760 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 408 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-03 01:02:19,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...